Illustration with landmark positions (red dots and white arrow for linear length) and semi-landmarks (dotted lines for curve length and grey solid line for area) on male <i>Cyprideis</i> sexual structures.

<p>A–F) 1^st walking leg (1WL), where the right side is indicated as transformed. C) Landmark positions and abbreviations as used in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0177791#pone.0177791.t001" target="_blank">Table 1</a>. G–I) Hemipenis. H) Indication of both units of the <i>Cyprideis</i> hemipenis, with terminology for specific components following <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0177791#pone.0177791.t001" target="_blank">Table 1</a>. I) Landmark positions and abbreviations as used in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0177791#pone.0177791.t001" target="_blank">Table 1</a>. Left panel–<i>C</i>. <i>mexicana</i>. Middle panel–<i>C</i>. <i>salebrosa</i>. Right panel–<i>C</i>. <i>torosa</i>. Structures lost during specimen preparation indicated with grey dotted lines.